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Coil Current Draw

A

Anonymous

Guest
Do the laws regarding battery power to depth, the "inverse sixth power law" described on a earlier post also apply to coils designed with increased current draw like Coiltek's Pro range, or do other formulas apply to calculate the depth advantage of there 20% increase of current draw.
 
Hi Ted,
I don't know what Coiltek have done in their Pro range of coils. As the electronics is Minelab's and only the coil can have changed, I would think that there is either a reduction in coil resistance or a different winding technique that has lowered the inductance, or perhaps a bit of both. You cannot circumvent the basic laws though.
Eric.
 
Hello Eric
Coiltek's promo for the coils state
"ON ALL SD DETECTORS
The pro range works well on all of the Minelab SD range of Gold Detectors but coupled with a 7.3volt regulated power supply they provide the ultimate in depth and sensitivity. The 7.3 volt system provides a much larger and denser flux field to ensure maximum depth and sensitivity is maintained throughout your entire days detecting.
Add a Pro Coil and you get all of the above with an extra boost from a coil that is wound to work even better on the hottest ground you can find. The greater the mineralisation the greater the advantage from our Pro Coils. Pro Coils also draw approximately 20% more power from your battery to produce an even bigger and denser flux field for even more depth and sensitivity, doubling the advantages over a standard SD detector and DD coil combination."
I was just curious as to how their promo stands up against detailed analysis.
 
Hi Ted,
Intersting Promo splurge.
Going by the last sentence in the promo, stating that it doubles the advantages of using a standard SD detector and DD coil configuration, would indicate to the novice that you would expect double the depth of the standard depth with the same size coils. This isn't the case and should be changed. A bit misleading. What do you think?
Regards,
Phil
 
I have no issue with the promo wording, I was curious as to how the coils features stood up to scrutiny.
 
Without seeing and testing a coil, it is hard to say more. Perhaps Coiltek could make a comment?
Eric.
 
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